The forming process of biomass fuel pellets using a ring mold pelletizer was analyzed,optimized,tested and evaluated in this study.The effects of stress amplitude and the stress ratio on the fatigue failure of the rin...The forming process of biomass fuel pellets using a ring mold pelletizer was analyzed,optimized,tested and evaluated in this study.The effects of stress amplitude and the stress ratio on the fatigue failure of the ring mold under 4-,3-,and 2-roller designs were investigated.Depending on the calculation of stress amplitude acting on the ring mold,the 4-roller design was chosen for having the smallest value of stress amplitude in this condition.After determining the main design parameters,a three-dimensional model of the ring mold pelletizer was established based on the Pro/Engineer software,and the model was transferred into ADAMS software through Mechanism/Pro which is a dedicated interface software.The ADAMS software was used to run simulations.In order to obtain the highest efficiency and the lowest power consumption,the optimal result was the 4-roller design.Finally,a prototype of the ring mold pelletizer with four rollers was designed and manufactured for biomass fuel pellet production.Corn stover biomass was used as material for experimental manufacturing of fuel pellets.Test and evaluation showed that the optimized pellet durability was 99.79%with ground corn stover particles passing a screen size of 1.97 mm,moisture content of 21.2%w.b.and a material moisture conditioning time of 3.82 h.Pellets formed in the prototype ring mold pelletizer using corn stover had acceptable durability according to European standards.展开更多
The large amount of heat produced from solid waste composting has stimulated great interest in heat recovery and utilization.This paper reviews the advances in composting heat recovery researches in the last decade.So...The large amount of heat produced from solid waste composting has stimulated great interest in heat recovery and utilization.This paper reviews the advances in composting heat recovery researches in the last decade.Some experimental results and theoretical studies on composting heat utilization are summarized.The results indicate a great potential for utilization of heat produced by the composting process.Common problems experienced by current methods are how to realize the maximum heat recovery without negatively impacting compost quality and the economics of heat recovery methods.Further advancement of these methods is currently receiving comprehensive interests,both academically and commercially.展开更多
基金the financial support received from the China Scholarship Council(201308210283)the national Spark Program(2015GA650012)+1 种基金the Cultivation Plan for Youth Agricultural Science and Technology Innovative Talents of Liaoning Province(2014053)the funding provided by Youth Fund of Shenyang Agricultural University(20121002)。
文摘The forming process of biomass fuel pellets using a ring mold pelletizer was analyzed,optimized,tested and evaluated in this study.The effects of stress amplitude and the stress ratio on the fatigue failure of the ring mold under 4-,3-,and 2-roller designs were investigated.Depending on the calculation of stress amplitude acting on the ring mold,the 4-roller design was chosen for having the smallest value of stress amplitude in this condition.After determining the main design parameters,a three-dimensional model of the ring mold pelletizer was established based on the Pro/Engineer software,and the model was transferred into ADAMS software through Mechanism/Pro which is a dedicated interface software.The ADAMS software was used to run simulations.In order to obtain the highest efficiency and the lowest power consumption,the optimal result was the 4-roller design.Finally,a prototype of the ring mold pelletizer with four rollers was designed and manufactured for biomass fuel pellet production.Corn stover biomass was used as material for experimental manufacturing of fuel pellets.Test and evaluation showed that the optimized pellet durability was 99.79%with ground corn stover particles passing a screen size of 1.97 mm,moisture content of 21.2%w.b.and a material moisture conditioning time of 3.82 h.Pellets formed in the prototype ring mold pelletizer using corn stover had acceptable durability according to European standards.
基金would like to express their gratitude towards the financial support received from the National Natural Science Foundation of China(Grant No:51508345)the National Sparking Plan Project(2015GA650012)the Cultivation Plan for Youth Agricultural Science and Technology Innovative Talents of Liaoning Province(2014053).
文摘The large amount of heat produced from solid waste composting has stimulated great interest in heat recovery and utilization.This paper reviews the advances in composting heat recovery researches in the last decade.Some experimental results and theoretical studies on composting heat utilization are summarized.The results indicate a great potential for utilization of heat produced by the composting process.Common problems experienced by current methods are how to realize the maximum heat recovery without negatively impacting compost quality and the economics of heat recovery methods.Further advancement of these methods is currently receiving comprehensive interests,both academically and commercially.
